UPS devices  > Megatech pinouts
Used for connecting Megatech inteligent UPS (type I) or smart UPS (type II) to PC
PC
Pin name
PC
Pin
Direction UPS
Pin
UPS
Pin name
Description
NC 1 1 NC  
AC Power Failuce 2 2 AC Power Failuce Active negative level (negative impulse indicates a power failure)
NC 3 3 NC  
Common Ground of Pin 2, 5, 6 4 <> 4 Common Ground of Pin 2, 5, 6  
UPS Battery Low 5 5 UPS Battery Low Active negative level (negative impulse indicates a batery low power level)
Turn Off UPS 6 6 Turn Off UPS Active positive level (positive impulse sent by PC shuts down the UPS)
NC / GND for pin 6 7 <> 7 NC / GND for pin 6 NC in Type I cable. GND for pin 6 in Type II cable.
NC 8 8 NC  
NC 9 9 NC  
9 pin D-SUB male connector layout
9 pin D-SUB male connector
at the UPS
9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the PC
According to 1 reports in our database (0 positive and 0 negative) this pinout may be incorrect.

Is this pinout
Megatech M2501 UPS cables Types I, II visual pinout:
Megatech M2501 UPS cables Types I, II diagram
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